Publication detail
Roughness effects in concentrated contact from full to mixed lubrication
ŠPERKA, P. KŘUPKA, I. HARTL, M.
English title
Roughness effects in concentrated contact from full to mixed lubrication
Type
conference paper
Language
en
Original abstract
Stirred up by a quest for higher energy efficiency, there is an evident trend of lubricant film thinning in recent decades. As a result, an impact of a surface roughness on the contact performance in machine components is increasing steadily. Surface roughness influences film thickness, pressure distribution and friction produced by an EHL contact. It is well known that simple approach how to deal with roughness is often not sufficient due to roughness deformation and roughness influence on film thickness. Therefore, it is important to get know more about effects connected with specific character of surface features inside the contact. This study presents an overview of recent film thickness experiments showing phenomena connected with several kinds of roughness features. Specific focus is given to its magnitude of deformation and affected film thickness to give a better image of real surfaces separation.
English abstract
Stirred up by a quest for higher energy efficiency, there is an evident trend of lubricant film thinning in recent decades. As a result, an impact of a surface roughness on the contact performance in machine components is increasing steadily. Surface roughness influences film thickness, pressure distribution and friction produced by an EHL contact. It is well known that simple approach how to deal with roughness is often not sufficient due to roughness deformation and roughness influence on film thickness. Therefore, it is important to get know more about effects connected with specific character of surface features inside the contact. This study presents an overview of recent film thickness experiments showing phenomena connected with several kinds of roughness features. Specific focus is given to its magnitude of deformation and affected film thickness to give a better image of real surfaces separation.
Keywords in English
Surface roughness; elastohydrodynamic contact; lubrication; film parameter
Released
20.09.2018
Publisher
MALAYSIAN TRIBOLOGY SOC-MYTRIBOS
Location
MALAYSIA
ISBN
978-967-13625-2-5
Book
PROCEEDINGS OF ASIA INTERNATIONAL CONFERENCE ON TRIBOLOGY 2018 (ASIATRIB 2018)
Pages from–to
171–172
Pages count
2
BIBTEX
@inproceedings{BUT170245,
author="Petr {Šperka} and Ivan {Křupka} and Martin {Hartl},
title="Roughness effects in concentrated contact from full to mixed lubrication",
booktitle="PROCEEDINGS OF ASIA INTERNATIONAL CONFERENCE ON TRIBOLOGY 2018 (ASIATRIB 2018)",
year="2018",
month="September",
pages="171--172",
publisher="MALAYSIAN TRIBOLOGY SOC-MYTRIBOS",
address="MALAYSIA",
isbn="978-967-13625-2-5"
}